Internal-combustion engine.



STATES PAEENT o FioE.

ADoLe'HnosNER, oF-BRIDGEPORT, CONNECTICUT, AssiGNon' To THE LOCOMOBILE COMPANY oF AMERICA, or NEW YORK, N. Y'., A CORPORATION, or WEST VIRGINIA.

INTERNAL-COMBUSTION ENGINE.

To all whom it may concern Be it known that I, ADOLPH RosxER, a

.subject of theEmperorof i-Xustria-Hungary,

and a resident of Bridgeport, in the county of Fairfield and State of Connecticut, have invented an Improvement in Internal-Conibiistion Engines, of which the following de- 'scription,.in connection with the accompanying drawings, is a specification, like characters on the. drawings representing like parts.

This invention relates to internal combus Y tion engines, and particularly to the means for controlling. the admission of fuel to the cylinder and the exhaust of the waste gases I therefrom.

v The invention will be best understoodby I reference to the following description when .taken 'in connection with the accompanying illustration -of one specific embodiment thereof,while its scope will be more par ticularly pointed out III the appended claims. I

In the drawing: the figure is a sectional elevation taken through a cylinder of an engine embodying one form of the invention..- v 4 Referring to the embodiment of the invention shown in the drawing, the engine -the're illustrated is provided wit lra main outer shell lwhich has the water acket 2,

and is supported upon the crank casing 3.

A wcrking piston l is connected by the rod 5 to the crank 6 and crank shaft 7. The rear end of the cylinder space is closed by the cylinder head 8, which has the water jacket 9 communicating with the cylinder jacket 2 and having also the centrally arranged spark plug 10. I

The cylinder 1 is provided at one side wvith. the admission port 11 opening from. the admission chamber 12, such port extending part way around said cylinder. the latter beingprovided on the opposite side with an exhaust port 13 opening from the. exhaust chamber 14.

Iii-the described embodiment of the inventionthe piston 4- works in direct sliding contact with the walls of an inner sleeve or l'iningcvlin'der 1'5,.wl1i'chsleeve is bolted to the crank casing 3 and has its upper or rearedges terminating at the lower edges of the ports 11 and 13. The latter are also preferably located beyond the rearward; limit of .pisto travel, which is represented the drawing that the by dottedlines in Specification of Letters. Patent.

Patented Dec. it, 1915.

Application filed September 27, 1911. Serial No. 651,509.

comprises two separate slide valves 16 and 17. each in the form of an arc-shaped seg 'ment. filling theannular space between the two cylinders. The former serves to control the inlet port 1l,'and the latter the exhaust port 13. \Yhile slides of different extent or proportions might be employed. herein each one is semi-cylindrical, the edges of one being in sliding contact with the edges of the other.

The slide valves are so located that they may be projected beyond the edges of the inner cylinder 15. to cover the ports 11 and 13. as required. This permits the slide to be constructed without forming ports ther.e'

in, the projecting ends ofthe sleeves being the only portions exposed to the pressure of the combustion chamber and the heat thereof. the major portion of each slide being protected from heat and pressure in the annular space provided. The pressure in the explosion chamber during the compression and working strokes forces the separate and independent segments outwardly against their seats. so as to provide for the adequate seating of the valves and prevent all leakage of pressure about'the ends of-the same.

The slide valves being located in front of c the explosion space of the engine, they are not required to engage or cooperate with the cylinder head in their movements, and the head may be given a plain formation, serv-.

ing merely as an end closure for the cylinder and providing the most efficient form of combustion chamber with any desired clearance. ated by anv suitable means ,in timed rela-.

The slide valves'may be actu tion to the movements of the piston, and

with reference to the admission, compression, firing and exhaust. Each slide valve is actuated by mechanism substantially the same. and diifering only in adjustment, and

the latter is provided below the walls'of the cylinder Lwitha lug 18, which is connectedbythe. 19 intone end of the lev r 20,.

one onlyneedbe desci 'ibed.-; Referring to 'tlie actuatingmechanism for the .valve 16,-

compression stroke takesv place.

-The lever is pivoted at 21 and carries the cam roller 22-, which latter is normally pressed down by the spring 23 and push rod 24. The roller rests against the upper adjustable end of a lifting rod 25, the lower end of which carries a cam roll 26 bearing against the cam 27 on the cam shaft 28. The cam shaft 28 for the valve 16 and the shaft 29 for the valve 17 are driven by suitable gearing from the crank shaftat one-halfspeed of the latter.

The cams are so adjusted that on the commencement of the admission stroke the ex: haust valve has been lifted by its cam to project the end of the valve over and to cover the exhaust port,- the admission port at that time being opened through the retraction or depression of the. admission valve within the annular space between the cylinders. At the end of the admission stroke the admission valve is lifted, leaving both ports closed, and the next rearward or On the next forward or firing stroke the exhaust valve is opened near the end ofthe stroke, and maintained open during the nextrearward piston stroke, which completes the cycle. y

It will be seen that the valves require but a slight movement "to cover the ports, and

this movement being effected by cams it can be made to take place almost instantly, giv- 'ing the-benefit of the full port opening at 1. An internal combustion engine having an outer cylindei' aninnercylinder separated therefrom by annular space, a p ston'lworking in said nner cylinder, POItS III said outer cylinder beyond said inner cylinder and beyond said annular s ace, slide valves in said space, and means or moving said valves to pro ect their ends oversaid vports to close the same or withdraw the same toop'en the ports.

2. An internal combustion engine comprising a fixed outer cylinder, a fixed inner cylinder in said outer cylinder, a piston, a port, and means between sa1d inner and outer cylinder for controlling said port comprising a movable slide valve plate, said plate, when opening said port, having its end. adapted to be alternately projected over plates, said: plates being adapted to be movedeach to cover its respective port with its end exposed to the pressure of the explosion chamber or to be moved to open its-port, said plates being adapted to have their ends alternately projected over and withdrawn from said ports, and a fixedinner cylinder between said valve plates and said'piston.

4. An internal combustion engine comprising a fixed outer cylinder having admission and exhaust ports, said ports being directly opposite each other, a fixed inner cylinder separated therefrom by an annular space, a piston within said inner cylinder, and segmental valves working in said annular space and adapted to have their ends alternately withdrawn therein or projected therefrom respectively to open and close the ports.

5. An internal combustion engine comprising a fixed cylinder with a cylinder head, said cylinder having admission and exhaust ports direct-1y opposite each other, a piston, means for controlling said ports comprising a pair of independently movable arcshaped slide valve plate s, said plates being adapted to be movedeaeh to cover its respective port with its end exposed to the pressure of the explosion cham her or to be moved to open its port, said plates being adapt'ed to have their ends alt-ernately projected over and witl drawn from said ports and a fixed inner c linder between said valve plates and said piston.

6. An internal'combustion engin e comprising a fixed outer cylinder having admission and exhaust ports, a fixed inner cylinder separated therefrom by an annular space, a piston within said inner cylinder and segmental valves working in said annular spaceand having ends adapted to be alternately withdrawn within the space or projected therefrom respectively to open and close. the ports, said project-ed ends be,- ing wholly exposed to the pressure of the cylinder space. andflhaving sliding contact with the cylinder walls onlyon their exteriofaces.

n testimony whereof, I have signedmy name to this specification, in the presence of two subscribing witnesses.

' ADOLPH ROSNER.

Witnesses:'

A. L. RIKER, Tiioaf As B. Boo'rH. 

